Specifications

Examples:
Note: mirror_settings should be run on the target system(s) (or on all systems, if you want the
settings to take effect regardless of which system becomes the mirror source). The mirror
must be paused and restarted before any settings changes will take effect.
Examples:
To set the network compression level to 5:
mirror_settings datarep-ext3 compress 5
To disable network compression:
mirror_settings datarep-ext3 compress 0
To set the rewind logging directory (and enable rewind logging):
mirror_settings datarep-ext3 logdir /tmp/logs
To disable rewind logging:
mirror_settings datarep-ext3 logdir “”
To set the rewind log maximum size to 1GB:
mirror_settings datarep-ext3 logmax 1073741824
To disable the rewind log maximum size limit:
mirror_settings datarep-ext3 logmax 0
Bitmap Administration
bitmap -a <num>|-c|-d|-X <bitmap_file>
-a <num> adds the asynchronous write parameter to the bitmap file. It is needed if a
synchronous mirror is upgraded to include an asynchronous target. The default value
for <num> is 256.
-c cleans the bitmap file (zeroes all the bits). This can be used to avoid a full resync in
case an exact replica of the source disk exists on the target. Use this option with
extreme caution.
-d dirties the bitmap file (sets all the bits to ones). This option can be used to force a
full resync, for example after a split-brain situation has occurred.
-X<bitmap file> examines the bitmap file and displays useful information about
the bitmap and the mirror.
In addition, the mdadm command may also be used to administer a DataKeeper resource, as the
DataKeeper resource is actually an md device. Refer to the mdadm(8) man page for details. Note:
When using mdadm, be sure to use the version that is located in $LKROOT/bin, as it is more up-to-
date than the version included with the operating system.
SteelEye Protection Suite for Linux301